Investigation of electrostatic discharge sensitiveness of 4,6-dinitrobenzofuroxane complexes (with selected monovalent metals)

Abstract

Previously was found that potassium 4,6-dinitrobenzofuroxane complexes have a high sensitiveness to electrostatic discharge stimuli and MIE level was measured about 30 mJ. This lead our work to focus also on the other 4,6-dinitrobenzofuroxane complexes with metal monovalent ions. From range of monovalent metal ions beside of potassium, complexes with sodium, rubidium, cesium and silver were prepared and investigated. Combinations with the selected admixtures (i.e. graphite, carbon black, copper powder, etc.) were also investigated on the influence of the ESD sensitiveness. Obtained results indicate high sensitivity of the all tested complexes. For alkali metal ions MIE levels shows the trend to rise with increasing molecular weight of metal ions. Nevertheless, obtained MIE levels are very low up to 250 mJ. These levels were not affected by using any of the selected admixtures. On the other hand compacting of samples (resp. rising bulk density) resulted in certain cases at considerable increase of minimum initiation energies. Especially in mixtures with graphite compacting resulted in values of minimal initiation energies exceeding levels of 500 mJ. In contrary with the all tested metal ions the silver complex was found to be relatively insensitive to ESD stimuli. Measured MIE of the silver analog is 10 mJ. The influence of the complex cation and used admixtures on the overall ESD sensitiveness is discussed.